Uniform Region of Self‐Aerated Flow
Publication: Journal of Hydraulic Engineering
Volume 109, Issue 3
Abstract
The measurement of air concentration and velocity obtained in the laboratory are compared with the recent prototype measurement obtained on Aviemore spillway. This comparison suggests that if a characteristic depth such as the depth at which the air concentration is 0.9 chosen then the averaged air concentration over this depth is only a function of the slope. Similarly the air concentration distribution is also determined by the slope. The velocity distribution determined in the laboratory and in the field are also compared and it is suggested that water velocity measurements are consistent with a universal velocity distribution. These with the Darcy friction factor computed from laboratory results lead to a simple method for predicting the design parameters in the uniform aerated flow at the end of a long spillway.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Cain, P., “Measurements within Self‐Aerated Flow on a Large Spillway,” thesis presented to the University of Canterbury, at Christchurch, New Zealand, in 1978, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
2.
Cain, P., and Wood, I. R., “Instrumentation for Measurement in Self‐Aerated Flow on a Large Spillway,” Journal of the Hydraulics Division, ASCE, Vol. 107, No. HY11, Proc. Paper 16637, Nov., 1981, pp. 1407–1424.
3.
Cain, P., and Wood, I. R., “Measurements of Self‐Aerated Flow on a Large Spillway,” Journal of the Hydraulics Division, ASCE, Vol. 107, No. HY11, Nov. 1981, pp. 1407–1424.
4.
Gangadharaiah, T., Lakshmana Rao, N. S., and Seetharamiah, K., “Inception and Entrainment in Self‐Aerated Flows,” Journal of the Hydraulics Division, ASCE, Vol. 96, No. HY7, Proc. Paper 7247, July, 1970, pp. 1549–1565.
5.
Halbronn, G., discussion of Bauer, W. J., “Turbulent Boundary Layer on Steep Slopes,” Transactions, ASCE, Vol. 119, 1954, pp. 1234–1242.
6.
Halbronn, G., Durand, R., and Lara, C, “Air Entrainment in Steeply Sloping Flumes,” Proceedings of the Fifth Meeting of the International Association of Hydraulic Research,” 1953, pp. 455–466.
7.
Henderson, F. M., Open Channel Flow, The MacMillan Co., New York, N.Y., 1966.
8.
Lai, K. K., “Studies of Air Entrainment on Steep Open Channels,” thesis presented to the University of New South Wales, at Sydney, Australia, in 1971, in partial fulfillment of the requirements for the degree of Master of Engineering.
9.
Rao, N. S. L., and Kobus, H. E., “Characteristics of Self‐Aerated Free Surface Flows,” Water and Wastewater, Current Research and Practice, Vol. 10, Erich Schmidt Verlag, Berlin, 1974.
10.
Straub, L. G., and Anderson, A. G., “Experiments on Self‐Aerated Flow in Open Channels,” Journal of the Hydraulics Division, ASCE, Vol. 84, No. HY7, 1958, pp. 1890–1‐1890–33.
11.
Straub, L. G., and Lamb, O. P., “Studies of Air Entrainment in Open Channel Flows,” Proceedings of the 5th Meeting of the International Association for Hydraulic Research, 1953, pp. 425–457.
12.
Straub, L. G., Killen, J. M., and Lamb, O. P., “Velocity Measurement of Air‐Water Mixtures,” Transactions, ASCE, Vol. 19, 1954, pp. 207–220, D 39, pp. 1–12.
13.
Viparelli, M., “Fast Water Flow in Steep Channels,” Proceedings of the 7th Meeting of the International Association for Hydraulic Research, 1957.
14.
Viparelli, M., “The Flow in a Flume with a 1:1 Slope,” Proceedings of the 5th Meeting of the International Association for Hydraulic Research, 1953, pp. 415–423.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 109 • Issue 3 • January 1983
Pages: 447 - 461
Copyright
Copyright © 1983 ASCE.
History
Published online: Jan 1, 1983
Published in print: Jan 1983
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.